Classificação / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: paresi: The specific name paresi refers to the name of an indigenous tribe (Aruák group) formerly inhabiting the Parecis Hills in central Brazil..
More on author: Costa.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico. Tropical
South America: swampy floodplains of stream tributary to Sepotuba River, upper Paraguay River basin in central Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 2.6 cm macho/indeterminado; (Ref. 76975); 2.3 cm SL (female)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios dorsais (total) : 8 - 10; Raios anais : 12 - 14; Vértebras: 29 - 30. Distinguished from all other species of the subgenus Melanorivulus in having small white spots forming a reticulate pattern on the dorsal fin and the basal part of the anal fin, and forming narrow bars on the caudal fin in males, and a narrow basihyal, width about 35% of the basihyal length. Can be diagnosed from all congeners by the unique combination of the following characters: entire flank with a continuous mid-lateral dark gray stripe; scales in longitudinal series 30-31; flank with close red dots, arranged in chevron-like series with the vertex on the mid-lateral line; and caudal fin in males with red bars (Ref. 76975).
Found in a shallow (about 10 cm deep), slightly inclined swamp with slow water current, in open vegetation area (Ref. 76975).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
Costa, W.J.E.M., 2007. Rivulus bororo and R. paresi, two new killifishes from the upper Paraguay River basin, Brazil (Teleostei: Rivulidae). Ichthyol. Explor. Freshwat. 18(4):351-357. (Ref. 76975)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00311 - 0.01404), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
